Added DocC documentation

Sources/BluetoothLinux/BluetoothLinux.docc/Documentation.md

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+# ``BluetoothLinux``
+
+Pure Swift Bluetooth Stack for Linux.
+
+## Overview
+
+Provides a variety of APIs for interacting with different Sockets and IOCTL that Linux provides for Bluetooth.
+
+This library does not require the official [BlueZ](https://www.bluez.org) userland library, instead it communicates directly with the Linux kernel Bluetooth subsystem. 
+
+## Topics
+
+### Bluetooth Linux subsystem
+
+- ``BluetoothSocketProtocol``
+- ``BluetoothSocketAddress``
+- ``BluetoothSocketOption``
+- ``AddressType``
+- ``LinkMode``
+
+### Host Controller Interface
+
+- ``HostController``
+- ``HostControllerIO``
+- ``HCISocketAddress``
+- ``HCISocketOption``
+- ``HCIBusType``
+- ``HCIControllerType``
+- ``HCIChannel``
+- ``HCIDeviceOptions``
+- ``HCIDeviceEvent``
+- ``HCIDeviceFlag``
+- ``HCIPacketType``
+
+### L2CAP
+
+- ``L2CAPSocket``
+- ``L2CAPSocketAddress``
+- ``L2CAPSocketOption``
+
+### RFCOMM
+
+- ``RFCOMMIO``
+- ``RFCOMMSocket``
+- ``RFCOMMSocketAddress``
+- ``RFCOMMSocketOption``
+- ``RFCOMMDevice``
+- ``RFCOMMState``
+- ``RFCOMMFlag``
+- ``RFCOMMLinkMode``
+
+### SCO
+
+- ``SCOSocket``
+
+### HIDP
+
+- ``HIDPIO``
+
+### CMTP
+
+- ``CMTPIO``
+
+### BNEP
+
+- ``BNEPIO``